This question arises for all telecom customers,since its the time of MNP(Mobile Number Portability) in India and everyone changes their network provider as they wish.As the number of network providers are increasing day by day,most of the customers are in search of methods to check balance and all.I have tried to include balance checking methods of all the main network providers in India such as Airtel,Reliance gsm,Idea,Tata Docomo,Vodafone,Bsnl,Videocon,Uninor.